Added socket connection acknowledgement and ping events to resolve freeze issues

7ec3fdfd · Simhachalam ch · 8d1ba475 · 7ec3fdfd · 7ec3fdfd · 7ec3fdfd
Commit 7ec3fdfd authored Oct 31, 2019 by Simhachalam ch
Showing with 178 additions and 8 deletions
app/src/main/java/com/vsoft/vera/CatalogueApplication.java
app/src/main/java/com/vsoft/vera/ui/ChatActivity.java
app/src/main/res/values/strings.xml
--- a/app/src/main/java/com/vsoft/vera/CatalogueApplication.java
+++ b/app/src/main/java/com/vsoft/vera/CatalogueApplication.java
@@ -174,7 +174,7 @@ public class CatalogueApplication extends MultiDexApplication {
            options.upgrade = true;
            mSocket = IO.socket(Constants.CHAT_SERVER_URL,options);
-//            mSocket = IO.socket("http://10.1.8.229:12811",options);
+//            mSocket = IO.socket("http://74cb19e2.ngrok.io/",options);
        } catch (URISyntaxException e) {
            throw new RuntimeException(e);

--- a/app/src/main/java/com/vsoft/vera/ui/ChatActivity.java
+++ b/app/src/main/java/com/vsoft/vera/ui/ChatActivity.java
@@ -116,6 +116,8 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
    private static final String TAG = ChatActivity.class.getName();//"ChatActivity";
    private static String NEW_MESSAGE = "new message";
+    private static String MESSAGE_DELIVERED = "messageDelivered";
+    private static String SERVER_PING_PONG = "server_ping_pong";
    private static String AUTHENTICATED = "authenticated";
    private static String UNAUTHORIZED = "unauthorized";
    private static String ADD_USER = "add user";
@@ -169,6 +171,34 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
    private final static String INIT_MSG = "hi";
    private  String chatHistroy= "";
    String ChatHistorybase64;
+    /**
+     * using this flag for implement client and server
+     * acknowledgement
+     */
+    private boolean hasMsgSent = false;
+    private final int ACK_EVENT = 2;
+    private String clientMsg;
+    /**
+     * using this flag to check current
+     * socket id is valid or not
+     *
+     */
+    private boolean hasPingPongPassed = false;
+    private boolean hasRequestProcessCompleted = false;
+    private final int PING_PONG_EVENT = 3;
+    /**
+     * 2O SECS for ideal acknowledgement
+     */
+    private final int ACK_TIMEOUT = 15000;
+    /**
+     * 3O SECS for ideal acknowledgement
+     */
+    private final int PING_PONG_TIMEOUT = 30000;
    /**
     * These var will to set delay for listing dialog. Previously it will open for infinite time.
     * Now open the listening, if user will not response it'll close after 10 Secs.
@@ -182,6 +212,7 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
    private LinearLayout mainLayt;
    private PowerManager.WakeLock wl;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
@@ -244,6 +275,8 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
        mSocket.on(NEW_MESSAGE, onNewMessage);
        mSocket.on(AUTHENTICATED, authenticated);
        mSocket.on(UNAUTHORIZED, unAuthorized);
+        mSocket.on(MESSAGE_DELIVERED, onMessageDelivered);
+        mSocket.on(SERVER_PING_PONG, onServerPingPongTest);
        mSocket.connect();
@@ -277,6 +310,7 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
 							e.printStackTrace();
 						}
 						mSocket.emit(NEW_MESSAGE, jsonObject);
+						hasMsgSent = false;
            }
@@ -403,10 +437,81 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
    }
-    private void readAndWriteCallsData() {
+    /**
+     *  Handling client-server acknowledgement
+     *  to avoid chot bot freeze issues
+     */
+    private Handler ackHandler = new Handler() {
+        @Override
+        public void handleMessage(Message msg) {
-        File callDataFile = new File(Environment.getDataDirectory()+"/data/com.vsoft.vera/databases/db/"+DATABASE_NAME);
+            if(!hasMsgSent || !hasPingPongPassed){
+                /**
+                 * reset the socket connection
+                 * if message is not reached with in 20 secs.
+                 */
+                if(mSocket.connected()){
+                    //if it is connected then disconnect
+                    Log.e(TAG, "socket is going to disconnect");
+                    mSocket.disconnect();
+                }
+                ChatLogManager.saveLogEvent("Connection Broken - Message not sent to server","",String.valueOf(mSocket.connected()), mSocket.id(),new Date());
+                //recreat the socket connection here
+                mSocket.connect();
+                Log.e(TAG, "socket reconnecting...");
+                handlerDelayMessage.postDelayed(new Runnable() {
+                    @Override
+                    public void run() {
+                        runOnUiThread(new Runnable() {
+                            @Override
+                            public void run() {
+                                textDotLoader.hide();
+                                mInputMessageView.setText(clientMsg);
+                                showSocketConnectError(R.string.error_connect_try_again);
+                            }
+                        });
+                    }
+                }, 1000);
+            }else{
+                Log.i(TAG, "message delivered successfully");
+            }
+        }
+    };
+    /**
+     *  Handling client-server ping pong test
+     *  to avoid chot bot freeze issues
+     */
+    private Handler pingPongHandler = new Handler() {
+        @Override
+        public void handleMessage(Message msg) {
+            mSocket.emit(SERVER_PING_PONG, "ping");
+            ChatLogManager.saveLogEvent("PING","",String.valueOf(mSocket.connected()), mSocket.id(),new Date());
+            waitForServerAcknowledgement();
+            Log.i(TAG, "send ping to server");
+        }
+    };
+    private void waitForServerAcknowledgement(){
+        Message msg = ackHandler.obtainMessage(ACK_EVENT);
+        ackHandler.sendMessageDelayed(msg, ACK_TIMEOUT);
+    }
+    private void startPingPongTest(){
+        hasPingPongPassed = false;
+        pingPongHandler.removeCallbacksAndMessages(null);
+        Message msg = pingPongHandler.obtainMessage(PING_PONG_EVENT);
+        pingPongHandler.sendMessageDelayed(msg, PING_PONG_TIMEOUT);
+        Log.i(TAG, "PING PONG TEST SCHEDULED");
+    }
+    private void readAndWriteCallsData() {
+        File callDataFile = new File(Environment.getDataDirectory()+"/data/com.vsoft.vera/databases/db/"+ DATABASE_NAME);
        try {
            File path = getDatabasePath(DATABASE_NAME);
@@ -723,6 +828,7 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
        if (NetworkConnectivity.haveNetworkConnection(ChatActivity.this)) {
            String message = mInputMessageView.getText().toString().trim();
+            clientMsg = message;
            if (!TextUtils.isEmpty(message)){
                if (null == mLoggedInUsername) return;
@@ -736,7 +842,8 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
                 * then we are reconnecting and send the message again
                 */
                if (!mSocket.connected()){
-                    showSocketConnectError();
+                    mSocket.disconnect();
+                    showSocketConnectError(R.string.error_connect);
                    mSocket.connect();
                    return;
                }
@@ -762,6 +869,9 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
                Log.i("Print", jsonObject.toString());
                mSocket.emit(NEW_MESSAGE, jsonObject);
+                hasMsgSent = false;
+                hasRequestProcessCompleted = false;
+                waitForServerAcknowledgement();
                ChatLogManager.saveLogEvent(message,"",String.valueOf(mSocket.connected()), mSocket.id(),new Date());
            } else {
@@ -803,7 +913,7 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
                @Override
                public void run() {
 //                    userAuthenticateTask();
-                    Log.e(TAG, "socket got connected" + mSocket.id());
+                    Log.e(TAG, "socket got connected - " + mSocket.id());
 //                    Toast.makeText(getApplicationContext(),
 //                            R.string.connect, Toast.LENGTH_LONG).show();
                    initChatMessage(INIT_MSG);
@@ -835,17 +945,23 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
            } catch (JSONException e) {
                e.printStackTrace();
            }
+            clientMsg = message;
            mSocket.emit(NEW_MESSAGE, jsonObject);
+            hasMsgSent = false;
+            hasRequestProcessCompleted = false;
+            waitForServerAcknowledgement();
        }
    }
-    private void showSocketConnectError(){
+    private void showSocketConnectError(final int msgResourceId){
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
-                    Log.e(TAG,"failed to connect");
+                    handlerDelayMessage.removeCallbacksAndMessages(null);
+                    Log.e(TAG,"connect error");
                    Snackbar snackbar = Snackbar
-                            .make(mMessagesView, R.string.error_connect, Snackbar.LENGTH_LONG)
+                            .make(mMessagesView, msgResourceId, Snackbar.LENGTH_LONG)
                            .setAction("Dismiss", new View.OnClickListener() {
                                @Override
                                public void onClick(View view) {
@@ -943,8 +1059,17 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
                @Override
                public void run() {
                    if(!isConnectError) {
+                        ackHandler.removeCallbacksAndMessages(null);
+                        pingPongHandler.removeCallbacksAndMessages(null);
                        Log.e(TAG,"failed to connect");
+                        runOnUiThread(new Runnable() {
+                            @Override
+                            public void run() {
+                                textDotLoader.hide();
+                            }
+                        });
                        Snackbar snackbar = Snackbar
                                .make(mMessagesView, R.string.error_connect, Snackbar.LENGTH_LONG)
                                .setAction("Dismiss", new View.OnClickListener() {
@@ -991,6 +1116,11 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
    private Emitter.Listener onNewMessage = new Emitter.Listener() {
        @Override
        public void call(final Object... args) {
+            mSocket.emit(MESSAGE_DELIVERED,"message delivered to client");
+            hasRequestProcessCompleted = true;
+            ackHandler.removeCallbacksAndMessages(null);
+            pingPongHandler.removeCallbacksAndMessages(null);
+            Log.i(TAG, "PING PONG SCHEDULE DISMISSED");
            /*Reset this flag every time*/
            mIsConversationEnd = false;
@@ -1120,6 +1250,43 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
        }
    };
+    /**
+     * Chat server calls this method if user is unauthorized
+     */
+    private Emitter.Listener onMessageDelivered = new Emitter.Listener() {
+        @Override
+        public void call(final Object... args) {
+            ackHandler.removeCallbacksAndMessages(null);
+            hasMsgSent = true;
+            String acknowledgement = (String) args[0];
+            CatalogueLog.i(acknowledgement);
+            ChatLogManager.saveLogEvent("","Message reached to server",String.valueOf(mSocket.connected()), mSocket.id(),new Date());
+            //start ping pong test here
+            startPingPongTest();
+        }
+    };
+    /**
+     * ping pong test for current session with server
+     */
+    private Emitter.Listener onServerPingPongTest = new Emitter.Listener() {
+        @Override
+        public void call(final Object... args) {
+            hasPingPongPassed = true;
+            ackHandler.removeCallbacksAndMessages(null);
+            Log.i(TAG, "ping pong test passed");
+            String pingPongMsg = (String) args[0];
+            CatalogueLog.i(pingPongMsg);
+            ChatLogManager.saveLogEvent("",pingPongMsg,String.valueOf(mSocket.connected()), mSocket.id(),new Date());
+            //check if it has to reschedule or not continue the ping test
+            if(!hasRequestProcessCompleted){
+                startPingPongTest();
+            }
+        }
+    };
    private void refreshTokenApiTask() {
        CatalogueLog.d("-- is 401, try refresh token...");
        CatalogueLog.d("refresh token: " + PrefManager.getSharedPref(this, PrefManager.PREFERENCE_REFRESH_TOKEN));
@@ -1495,6 +1662,8 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
            mSocket.off(NEW_MESSAGE, onNewMessage);
            mSocket.off(AUTHENTICATED, authenticated);
            mSocket.off(UNAUTHORIZED, unAuthorized);
+            mSocket.off(MESSAGE_DELIVERED, onMessageDelivered);
+            mSocket.off(SERVER_PING_PONG, onServerPingPongTest);
        }
        wl.release();

--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -140,6 +140,7 @@
    <string name="connect">Connected</string>
    <string name="disconnect">Disconnected, Please check your internet connection</string>
    <string name="error_connect">Failed to connect</string>
+    <string name="error_connect_try_again">Failed to connect. Please try again!</string>
    <string name="unauthorized_user">Unauthorized User</string>
    <!-- messages -->